Automobile heating system



June 21, 1932. c. cuuss 1,853,726 AIJT'OMOBILE HEATING SYSTEH Filed May 31, 1.929

- INVENTOR Charles C- Nuss b 0M5, ay/z h s attorney Patented June 21, 1932 UNITED STATES PATENT OFFICE CHARLES C. NUSS, OF WASHINGTON, PENNSYLVANIA AUTOMOBILE HEATING SYSTEM Application filed May 31,

as been a matter of common knowledge that the water of the cooling jacket of an internal combustion engine may be circulated through heat radiators to warm the interior of an automobile. Likewise, by employing suitable means, heat may be abstracted from the exhaust passage of the engine to heat the car. The present invention Involves certain improvements in car-heating systems by means of which the heat derived rom these known sources is utilized in a particularly efi'ective manner.

the accompanying drawing Fig. I is a view, partially in side elevation and partially in section, of the fore portion of a motor car, and illustrates the heating system of the present invention; and Fig. II is a schematic view in side elevation of an automobile motor, showing the heating system with a cer- In the past it h go tain modification adapted thereto.

Referring to the drawing, the car motor 2 has an upper connection 3 to the cooling radiator 4. This upper connection, and a lower communication which is not shown in Fig. I, permits circulation of water through the cooling jacket of the motor and the radiator 4. In the exhaust passage 5 leadin from the motor is an auxiliary heater 6, w ich 1s efiective to impart heat from the exhaust gases of,the motor to the water circulating within the heating system.

A conduit 7 is tapped into the water jacket 20 of the motor, and carries hot water downward therefrom to the auxiliary heater 6 wherein it becomes more highly heated before passing upward through pipe 8 to the car heating radiator 9. The conduit 7 communicates with the circulating cooling water adjacent the bottom of the water jacket 20, as indicated in the drawing. Moving in the direction of the arrows, the water flows through the pipe 10, and back to the jacket water in connection 3 the uniting of pipes 3 and 10 being at a point of higher elevation than said heat radiator 9. Water being drawn from the cooling jacket 20 through connection 3 to the radiator 4, will obviously aspirate water from the pipe 10 at the point 11. This asirating action aids the natural gravity and buoyancy forces in causing the water to move 1829. Serial No. 367,488.

throu may e inserted in the piping at h the system as described. Cocks 12 suitable points to serve as means for closing and emptyin the pipes when car heating is not desire radiator. Only part of the jacket water is utilized; that is to say, only a fractional ortion of the circulating acket water OlVS through the heating system. As a result, the

water in the heating system flows a t a moderate rate, and permits the heater 6 to raise the water to a high temperature before it enters the radiator 9. Fig. II shows prises a pipe 13 interconnecting the a modification, which comcirculatmg pump 14 and the radiator inlet pipe 8.

The three way cock valve 15 the fluid flow to occur as This valve may,

normally allows above described. however, be operated to bypass all, or a portion, of the-water from the heater 6 directly Thus, by means of valve, the amount the radiator 9 may I claim as my invention:

tothe pump and water a single of hot water admitted to be minutely regulated.

A heating system in combination with an automobile having a motor, a water jacket for the water of the water radiator, products of combustion ofmotor, a radiator for cooling the said jacket, an outlet conduit from jacket to the top of said cooling and an exhaust passage for the hot said motor; which heating system comprises a Water heater associated with said exhaust passage, a

heat radiator connected to said water heater, a pipe connecting said heat radiator with the outlet conduit of said water jacket at a point of higher elevation than said heat radiator. said pipe being so disposed relatively to let conduit that an aspirating effect is had pipe, and a heaterupon the water in such said outfeeding pipe leading downward from a point adjacent the bottom of said water jacket to said water heater, the water of said 'acket, at

the point where its withdrawal said feeding pipe, being at a lower ture than the water in saidoutlet is e ected by temperaconduit,

whereby1 the temperature gradient of the water in t e heating system, together with the relative location of the water eater, the heat radiator and the conduits, combine in creating maximum buoyancy forces to 00-0 rate with the said aspirating effect for pro ucing the flow of water through the heating system.

In testimony whereof I have hereunto set my hand.

CHARLES C. NUSS. 

